feat(vscode): multi project for vscode

[benfdking]

• Sets a setup for vscode to be passed multiple project paths
• Passes those to the lsp on initialization
• Adds a test to test this

[Copilot]

Pull Request Overview

This PR implements multi-project support for the VSCode SQLMesh extension by allowing users to configure multiple project paths instead of a single project path. The extension now passes these paths to the Language Server Protocol (LSP) during initialization, enabling the LSP to handle multiple SQLMesh projects simultaneously.

Key changes:

• Updated configuration from sqlmesh.projectPath (string) to sqlmesh.projectPaths (array)
• Modified LSP initialization to pass project paths as initialization options
• Added support for multi-project handling in the SQLMesh Language Server

Reviewed Changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
vscode/extension/package.json	Updates configuration schema to accept array of project paths
vscode/extension/src/utilities/config.ts	Refactors configuration handling to support multiple project paths
vscode/extension/src/lsp/lsp.ts	Passes resolved project paths to LSP during initialization
vscode/extension/src/utilities/sqlmesh/sqlmesh.ts	Updates function calls to use new resolved path structure
sqlmesh/lsp/main.py	Adds support for receiving and handling multiple project paths
vscode/extension/tests/utils.ts	Adds test utility for multi-project example path
vscode/extension/tests/multi_project.spec.ts	Adds test case for multi-project functionality
vscode/extension/tests/lineage.spec.ts	Updates existing tests to use new array-based configuration
examples/multi/.vscode/settings.json	Provides example configuration for multi-project setup

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[themisvaltinos]

lgtm, maybe have a small section in vscode.md that explains that the project paths need to be added in the settings to enable this